CVE-2026-92231
Joomla\!: cross-site scripting
- Risk score
- 44/100
- CVSS
- 6.7 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 29 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Joomla! Core - [20260915] - Core - XSS filter bypass in InputFilter via HTML5 entity decode mismatch in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The checkAttribute method normalized an attribute value before testing it against the "javascript:" scheme regex, however without decoding HTML5 entities beforehand, causing an XSS …
- Affected
- Joomla\!
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Story map
At a glance
Joomla\!: Yellow, plan it in. Joomla! Core - [20260914] - Core - MFA Authentication Bypass through rememberme cookies in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - The premature issuance of an rememberme cookie leads to a MFA bypass vulnerability.
The flaws
- CVE-2026-92231: Cross-site scripting (CVSS 6.7 · EPSS 0%)
- CVE-2026-92227: Authentication bypass (CVSS 7.5 · EPSS 0%)
- CVE-2026-90906: Cross-site scripting (CVSS 8.3 · EPSS 0%)
- CVE-2026-92222: Server-side request forgery (CVSS 8.0 · EPSS 0%)
The fix
Fix: Apply the vendor's security update; see the linked advisory.
Who is exposed: Joomla\!
Where it stands
- No known exploitation
Connects to
- Same weakness: Cross-site scripting (CWE-79). 399 other warnings in 30 days
- Same product: Earlier Joomla\! warnings. 12 in the last 90 days
Why it is Yellow
- CVSS 6.7 medium
References
Original description
Joomla! Core - [20260915] - Core - XSS filter bypass in InputFilter via HTML5 entity decode mismatch in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The checkAttribute method normalized an attribute value before testing it against the "javascript:" scheme regex, however without decoding HTML5 entities beforehand, causing an XSS vector.
Last activity 29 Sep 2026. Patch Forecast updates every hour.